Graphic (recording or chart--recording) ammeters, voltmeters, wattmeters.

In the course of the beekeeping work of this Department we have had a number of hives weighed at regular intervals of about a week by means of a steelyard and tripod, and two permanently standing on platform weighing machine and weighed every day. The information obtained from these has been of great value in showing the seasonal variation in activity, the periods of honey flow, and the effect on the hives of the presence of enormous numbers of hornets in the late summer.There were, however, many problems, such as the daily periods of activity and honey-collecting, the effect of high midday temperature, etc., that could only be dealt with by more frequent weighings, and it was felt that a machine to record continuously the weight of the hive by means of a rotating clock drum and pen would be a most valuable instrument of research.

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Graphic recording of the korotkoff sounds

American Heart Journal ◽

10.1016/0002-8703(59)90317-5 ◽

1959 ◽

Vol 57 (3) ◽

pp. 361-370 ◽

Cited By ~ 17

Author(s):

L.A. Geddes ◽

W.A. Spencer ◽

H.E. Hoff

Keyword(s):

Graphic Recording ◽

Korotkoff Sounds

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A Possible Proximity Effect on Human Grip Strength: An Attempted Replication

Perceptual and Motor Skills ◽

10.2466/pms.1989.68.1.157 ◽

1989 ◽

Vol 68 (1) ◽

pp. 157-158 ◽

Cited By ~ 9

Author(s):

William G. Braud

Keyword(s):

Statistical Analysis ◽

Grip Strength ◽

Proximity Effect ◽

Equal Weight ◽

Dominant Hand ◽

Double Blind ◽

Hand Dynamometer ◽

The Subject ◽

Chart Recording ◽

Attempted Replication

A double-blind experiment with 50 adults was conducted to replicate a finding that proximity to sugar reduces human grip strength. Grip strength of the dominant hand was measured by a chart-recording hand dynamometer for 12 trials. For half of the trials, the subject held an opaque, sealed bottle containing sugar; for half of the trials, the subject held a control bottle of equal weight containing sand. Statistical analysis indicated no significant effect of held substance upon grip strength.

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